Thumping on hard take off

[skoal_mint]

well i replaced my bushing about a week ago and my thumping problem was gone so i thought..but it got bad today, i turned on the highway and hit the gas and thr truck started to drat left to right a bit..and its a loud thumping noise until i get to a speed where the engine dosent pull as much and smooths out..

i got i video loading on photobucket, but its taing long...so does anyone have a clue to what i need to change or do??

when the video is done i'll post it..turn up your volume loud and listen carefully around the 14-23 second mark, its kinda sounds like a flat tire on the video

 

[MountaineerGreen]

what bushing did you replace?

 

[Turdle]

Right under your (driver) feet?

 

[skoal_mint]

i replaced the front right upper bushings

 

[skoal_mint]

THE VIDEO

 

[MountaineerGreen]

Couldn't hear anything in the video, except for your junk sliding around

Have you checked your cv axles?

 

[skoal_mint]

i haven check the cv's...but someone told me to check the jackshaft slip joint, it might need greasing...

in the video i can hear it, its pretty loud..about half way through is when you can hear it, when i stomp on the gas